The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Amount classified as intangible assets, excluding goodwill, attributable to disposal group held for sale or disposed of.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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Investment in Hotel Properties (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Intangible Assets
Amortization expense	$ 6,479	$ 7,543	$ 10,115
Intangible assets included in hotel properties
Intangible Assets
Value of intangibles at acquisition	45,249	147,947
Accumulated amortization	(9,653)	(22,453)
Net balance of intangibles at end of period	35,596	125,494
Amortization expense	5,964	6,877	9,448
Intangible assets included in hotel properties \| Easement agreement
Intangible Assets
Value of intangibles at acquisition	9,727	9,727
Intangible assets included in hotel properties \| Advanced bookings
Intangible Assets
Value of intangibles at acquisition	10,621	10,621
Amortization expense	2,340	1,769	4,560
Intangible assets included in hotel properties \| Ground/air lease agreements
Intangible Assets
Value of intangibles at acquisition	21,480	121,850
Amortization expense	3,791	4,113	4,113
Intangible assets included in hotel properties \| In-place lease agreements
Intangible Assets
Value of intangibles at acquisition	2,264	6,795
Amortization expense	1,455	830	454
Intangible assets included in hotel properties \| Above/(below) market lease agreements, net
Intangible Assets
Value of intangibles at acquisition	(1,693)	(3,896)
Amortization expense	(2,091)	(304)	(148)
Intangible assets included in hotel properties \| Below-market management agreement
Intangible Assets
Value of intangibles at acquisition	2,850	2,850
Amortization expense	$ 469	$ 469	$ 469
Minimum \| Ground/air lease agreements
Intangible Assets
Estimated useful life	65 years
Minimum \| In-place lease agreements
Intangible Assets
Estimated useful life	6 months
Minimum \| Above/(below) market lease agreements, net
Intangible Assets
Estimated useful life	6 months
Minimum \| Below-market management agreement
Intangible Assets
Estimated useful life	2 years
Maximum \| Ground/air lease agreements
Intangible Assets
Estimated useful life	75 years
Maximum \| In-place lease agreements
Intangible Assets
Estimated useful life	7 years
Maximum \| Above/(below) market lease agreements, net
Intangible Assets
Estimated useful life	16 years
Maximum \| Below-market management agreement
Intangible Assets
Estimated useful life	7 years
Doubletree Guest Suites Times Square \| Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Intangible Assets
Intangible assets written off due to sale of asset	$ 83,900
Doubletree Guest Suites Times Square \| Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] \| Ground/air lease agreements
Intangible Assets
Intangible assets written off due to sale of asset	81,500
Doubletree Guest Suites Times Square \| Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] \| In-place lease agreements
Intangible Assets
Intangible assets written off due to sale of asset	$ 2,400